Thai Airways battery policy summary
Thai Airways keeps loose lithium batteries in carry-on baggage only and applies approval bands above 100Wh. The last dataset refresh for this page was Apr 8, 2026. Trippwiz compares your battery's watt-hour result with the airline's common lithium battery bands so you can check rules faster before packing.
Power bank
Up to 100Wh: Allowed
Carry-on: Allowed
Checked: Not allowed
100Wh to 160Wh: Allowed with airline approval
Carry-on: Allowed
Checked: Not allowed
Above 160Wh: Not allowed
Carry-on: Not allowed
Checked: Not allowed
Spare lithium battery
Up to 100Wh: Allowed
Carry-on: Allowed
Checked: Not allowed
100Wh to 160Wh: Allowed with airline approval
Carry-on: Allowed
Checked: Not allowed
Above 160Wh: Not allowed
Carry-on: Not allowed
Checked: Not allowed
Installed device battery
Up to 100Wh: Allowed
Carry-on: Allowed
Checked: Allowed
100Wh to 160Wh: Allowed with airline approval
Carry-on: Allowed
Checked: Allowed
Above 160Wh: Not allowed
Carry-on: Not allowed
Checked: Not allowed
Policy edge cases for Thai Airways
- Thai Airways staff may apply stricter checks if a battery is damaged, swollen, or has an unreadable label.
- Thai Airways can require pre-approval and quantity limits for batteries in the 100Wh to 160Wh band.
- Some routes and airport security checks can be stricter than published guidance, so verify policy again before flying Thai Airways.
Common battery examples
10,000mAh at 3.7V
Approx 37Wh. 10,000mAh at 3.7V is around 37Wh and is usually allowed.
20,000mAh at 3.7V
Approx 74Wh. 20,000mAh at 3.7V is around 74Wh and is usually allowed.
30,000mAh at 3.7V
Approx 111Wh. 30,000mAh at 3.7V is around 111Wh and is usually allowed with airline approval.
FAQ
Can I carry a 20000mAh power bank on Thai Airways?
Usually yes in carry-on baggage only, because 20000mAh at 3.7V is about 74Wh and stays below the 100Wh band.
Can Thai Airways batteries go in checked baggage?
Loose spare batteries and power banks should not go in checked baggage. Devices with batteries installed are usually okay when switched off and protected.
Can I carry 20000mAh on Thai Airways?
A 20000mAh battery at 3.7V is around 74Wh, so it usually falls in the below-100Wh band and is typically carry-on only on Thai Airways.
Can I put a power bank in checked baggage on Thai Airways?
Usually no. Thai Airways generally treats power banks and spare lithium batteries as carry-on only items.
Does Thai Airways allow power banks above 100Wh?
Thai Airways often allows batteries in the 100Wh to 160Wh band only with prior airline approval.
Do I need approval for 100Wh to 160Wh on Thai Airways?
Yes, in most cases. Thai Airways can require pre-approval for higher-capacity lithium batteries in this range.
How many spare batteries can I carry on Thai Airways?
Quantity limits can vary by route and aircraft. Keep terminals protected and confirm your exact allowance with Thai Airways before departure.
Can I carry a 30000mAh power bank on Thai Airways?
A 30000mAh battery at 3.7V is about 111Wh. That can be allowed with approval on some routes, but batteries in above 160wh are typically not accepted for passenger baggage.
Related airline checkers
Compare nearby airline rules to check differences in approval and baggage handling.
Before you fly
- Match the Wh result on this page against the exact number printed on your battery if the label is available.
- Protect terminals, avoid loose batteries in checked bags, and switch devices off before checking them in.
- Use the official airline source again right before departure because airport and airline rules can change without notice.